sygnatura.

signature mark (catalog number placed on a book belonging to the book collection of a given library or reading room)

signature mark (identifying mark or sign of document, file, or item)

signature (person's name written on that person's work to mark is as their creation)

signature (text (or images, etc.) appended to a user's emails, newsgroup posts, forum posts, etc. as a way of adding a personal touch or including contact details)

signature (any identifying sign or inscription)

signature (group of three (or a multiple of three) sheets printed such that, when folded, they become a section of a book)

signature (copy of the medical prescription attached to the medicine by the pharmacy)

nick (notch cut crosswise in the shank of a type, to assist a compositor in placing it properly in the stick, and in distribution)

custos (older forms of book, an indication, at the end of a page, of the first word or term of the next page)

flèche (small tower for a church bell)

signature (act of placing an identifying mark on goods or post)